ATI LPN
PN ATI Comprehensive Predictor
1. What are the primary causes of respiratory acidosis?
- A. Hypoventilation and lung disease
- B. Hyperventilation and pneumonia
- C. Increased oxygen saturation and tachypnea
- D. Dehydration and hypoxia
Correct answer: A
Rationale: The correct answer is A: Hypoventilation and lung disease. Respiratory acidosis occurs when there is an accumulation of CO2 in the body due to inadequate ventilation. Hypoventilation, which reduces the elimination of CO2, and lung diseases that impair gas exchange are the primary causes. Choice B is incorrect because hyperventilation, not hypoventilation, leads to respiratory alkalosis, not acidosis. Choice C is incorrect because increased oxygen saturation and tachypnea do not directly cause respiratory acidosis. Choice D is incorrect as dehydration and hypoxia do not typically lead to respiratory acidosis.
2. A nurse is caring for a client who is at 41 weeks of gestation and is receiving oxytocin for labor induction. The nurse notes early decelerations on the fetal heart rate monitor. Which of the following nursing actions should the nurse take?
- A. Continue to monitor the fetal heart rate.
- B. Stop the oxytocin infusion.
- C. Perform a vaginal examination.
- D. Initiate an amnioinfusion.
Correct answer: A
Rationale: The correct action for early decelerations, which are caused by fetal head compression and are considered normal during labor, is to continue monitoring the fetal heart rate. Early decelerations mirror contractions and usually do not require any intervention. Stopping the oxytocin infusion (Choice B) is not necessary as early decelerations are not typically a cause for concern related to oxytocin. Performing a vaginal examination (Choice C) or initiating an amnioinfusion (Choice D) are unnecessary and not indicated specifically for early decelerations.
3. A nurse at a long-term care facility is caring for a client who requires oral suctioning. Which of the following supplies should the nurse plan to use for this task?
- A. Yankauer catheter
- B. Bulb syringe
- C. Suction catheter
- D. Sterile gloves
Correct answer: A
Rationale: The correct answer is A: Yankauer catheter. The Yankauer catheter is specifically designed for oral suctioning, making it the most appropriate choice for this task. Choice B, the Bulb syringe, is typically used for suctioning small amounts of liquid from the nose or mouth. Choice C, the Suction catheter, is more commonly used for deep suctioning in the trachea or bronchi. Choice D, Sterile gloves, are necessary for infection control but are not the primary supply used for oral suctioning.
4. Which is the correct method for teaching a client to use a cane when they have left-leg weakness?
- A. Use the cane on the weaker side of the body
- B. Advance the cane and the strong leg together
- C. Maintain two points of support on the floor at all times
- D. Advance the cane 30 to 45 cm (12-18 in) with each step
Correct answer: C
Rationale: The correct method for teaching a client to use a cane when they have left-leg weakness is to maintain two points of support on the floor at all times. This approach ensures stability and helps the client maintain balance while using the cane. Choice A is incorrect because the cane should be used on the stronger side of the body to provide additional support. Choice B is incorrect as advancing the cane and the strong leg together may compromise stability. Choice D is incorrect as advancing the cane too far with each step can lead to imbalance and falls.
5. A nurse on an acute unit has received a change of shift report for 4 clients. Which of the following clients should the nurse assess first?
- A. A client who is 1 hr postoperative and has hypoactive bowel sounds.
- B. A client who has a fractured left tibia and pallor in the affected extremity.
- C. A client who had a cardiac catheterization 3 hr ago and has 3+ pedal pulses.
- D. A client who has an elevated AST level following the administration of azithromycin.
Correct answer: B
Rationale: The correct answer is B because pallor in an extremity after a fracture could indicate compromised circulation, making it a priority for assessment. Choice A is not the priority as hypoactive bowel sounds in a client 1 hr postoperative, while concerning, do not indicate a life-threatening condition. Choice C, a client who had a cardiac catheterization 3 hr ago and has 3+ pedal pulses, indicates good perfusion and does not require immediate attention. Choice D, a client with an elevated AST level following the administration of azithromycin, may require further assessment but is not as urgent as the client with potential compromised circulation in choice B.
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